Weimar Germany's Left-Wing Intellectuals: A Political History of the Weltbühne and Its Circle

The Last Battle: When U.S. and German Soldiers Joined Forces in the Waning Hours of World War II in Europe

The Habsburgs: To Rule the World

Europe on Trial: The Story of Collaboration, Resistance, and Retribution during World War II

The Assassination of the Archduke: Sarajevo 1914 and the Romance That Changed the World

In the Shadow of the Empress: The Defiant Lives of Maria Theresa, Mother of Marie Antoinette, and Her Daughters

American Heritage History of World War I

Hitler and the Habsburgs: The Führer's Vendetta Against the Austrian Royals

The White War: Life and Death on the Italian Front 1915-1919

The World of Yesterday

A Nervous Splendor: Vienna 1888-1889

The Red Prince: The Secret Lives of a Habsburg Archduke

Twilight of Empire: The Tragedy at Mayerling and the End of the Habsburgs

The Habsburg Empire: A New History

The Middle Kingdoms: A New History of Central Europe

The Wandering Jews

History of the Habsburg Empire: Rise and Decline of the Great Dynasty: The Founder - Rhodolph's Election as Emperor, Religious Strife in Europe, Charles V, The Turkish Wars, The Polish War, Maria Theresa, The French Revolution & European Coalition

Orbán: Hungary's Strongman

Europe: The Struggle for Supremacy, from 1453 to the Present

Fin-De-Siecle Vienna: Politics and Culture (Pulitzer Prize Winner)